8. The length, breadth and height of a solid cuboid are in the ratio 5

1.	8. The length, breadth and height of a solid cuboid are in the ratio 5:4:2. if the total S.A ls1216 cm2find the dimensions of the cuboid.
Answer» SA=2lw+2lh+2hw1216= 2(lw+lh+hw)608= lw+lh+hw 2(2x4x + 2x5x + 4x5x) = 1216 cm² 8x² + 10x² + 20x²= 608 cm² 38x^2 = 608 cm² x² = 16 cm² x=4 cm 8 cm 16 cm * 20 cm = 2560 cm³ thanks

8. The length, breadth and height of a solid cuboid are in the ratio 5:4:2. if the total S.A ls1216 cm2find the dimensions of the cuboid.

Answer»

SA=2lw+2lh+2hw1216= 2(lw+lh+hw)608= lw+lh+hw

2(2x*4x + 2x*5x + 4x*5x) = 1216 cm²

8x² + 10x² + 20x²= 608 cm²

38x^2 = 608 cm²

x² = 16 cm²

x=4 cm

8 cm * 16 cm * 20 cm = 2560 cm³

thanks